[17p-418-1~13] 3.8 Optical measurement, instrumentation, and sensor

△ [17p-418-1] Study of detection method of Coherent Population Trapping resonance considering
time response

〇YUICHIRO YANO¹, MOTOAKI HARA¹, MASATOSHI KAJITA¹, TETSUYA IDO¹ (1.NICT)

Keywords:Chip-scale atomic clocks

Chip scale atomic clock have atractted attension as small and low-power atomic clocks, and it use a quantum interference phenomenon called Coherent Population Trapping (CPT) resonance to observe quantum transitions. In this study, we study a detection method focusing on the phase of CPT resonance for the aim of improving the S / N ratio of CPT resonance with both small size and low power consumption. As a result, it is shown that the phase modulation method can obtain much faster responsiveness than the conventional method.